package cn.have.service.impl;

import cn.have.service.IMessageProvider;
import org.springframework.cloud.stream.annotation.EnableBinding;
import org.springframework.cloud.stream.messaging.Source;
import org.springframework.messaging.MessageChannel;
import org.springframework.messaging.support.MessageBuilder;

import javax.annotation.Resource;
import java.util.UUID;

/**
 * @ClassName MessageProvider
 * @Author 王新
 * @Date: 2022/1/26 20:08 星期三
 * @Version 1.0
 * @Description
 */
@EnableBinding(Source.class)    // 可以理解为是一个消息的发送管道的定义
public class MessageProvider implements IMessageProvider {

    @Resource
    private MessageChannel output;  //消息发送管道

    @Override
    public String send() {
        String serial = UUID.randomUUID().toString();
        output.send(MessageBuilder.withPayload(serial).build());
        System.out.println("****serial: " + serial);
        return serial;
    }
}
